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Agrammatic aphasia as a late inserti...

Fix, Stephen Charles.

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Agrammatic aphasia as a late insertion disorder.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Agrammatic aphasia as a late insertion disorder./
作者:	Fix, Stephen Charles.
面頁冊數:	336 p.
附註:	Adviser: Cynthia K. Thompson.
Contained By:	Dissertation Abstracts International67-01A.
標題:	Health Sciences, Speech Pathology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3200934
ISBN:	9780542486517

Agrammatic aphasia as a late insertion disorder.
Fix, Stephen Charles.

Agrammatic aphasia as a late insertion disorder. - 336 p.

Adviser: Cynthia K. Thompson.

Thesis (Ph.D.)--Northwestern University, 2005.

This thesis examines agrammatic aphasic language production, proposing that several aspects of production reflect an underlying impairment involving morphological insertion as described by interpretive models of morphology such as Distributed Morphology (Halle & Marantz, 1993, 1994). In such models, syntax manipulates only features; replacement of features with actual phonological material occurs in a postsyntactic morphological module. It is hypothesized that replacement of features with overt phonological material is more difficult for agrammatic speakers than replacement of features with null (zero) morphology. This prediction is evaluated by eliciting production of regular past-tense forms, irregular past-tense forms containing overt affixation (e.g., lost) and irregular past-tense forms containing zero affixation (e.g., sang). Results reveal an inverse correlation between regular and irregular forms regardless of morphological structure of irregulars. Production of derivational morphology is also elicited; production of derived pseudowords is shown to be severely impaired, while production of real derived forms is much better preserved.

ISBN: 9780542486517Subjects--Topical Terms:

1018105
Health Sciences, Speech Pathology.

Agrammatic aphasia as a late insertion disorder.
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100 1 $a Fix, Stephen Charles. $3 1264155
245 1 0 $a Agrammatic aphasia as a late insertion disorder.
300 $a 336 p.
500 $a Adviser: Cynthia K. Thompson.
500 $a Source: Dissertation Abstracts International, Volume: 67-01, Section: A, page: 0165.
502 $a Thesis (Ph.D.)--Northwestern University, 2005.
520 $a This thesis examines agrammatic aphasic language production, proposing that several aspects of production reflect an underlying impairment involving morphological insertion as described by interpretive models of morphology such as Distributed Morphology (Halle & Marantz, 1993, 1994). In such models, syntax manipulates only features; replacement of features with actual phonological material occurs in a postsyntactic morphological module. It is hypothesized that replacement of features with overt phonological material is more difficult for agrammatic speakers than replacement of features with null (zero) morphology. This prediction is evaluated by eliciting production of regular past-tense forms, irregular past-tense forms containing overt affixation (e.g., lost) and irregular past-tense forms containing zero affixation (e.g., sang). Results reveal an inverse correlation between regular and irregular forms regardless of morphological structure of irregulars. Production of derivational morphology is also elicited; production of derived pseudowords is shown to be severely impaired, while production of real derived forms is much better preserved.
520 $a It is also hypothesized that agrammatic production of morphology becomes more difficult as the number of features requiring spellout increases. This is evaluated via study of agrammatic production of verbs and -er nominals; results indicate that verbs and nominals requiring spellout of fewer features (those taking fewer arguments) are easier to produce than those requiring spellout of more features (taking more arguments), consistent with previous results (de Bleser & Kauschke, 2000; Jonkers, 2000; Jonkers & Bastiaanse, 1996, 1998; Kim & Thompson, 2000, 2004; Kiss, 2000; Luzzatti & Chierchia, 2002; Thompson, Lange, Schneider, & Shapiro, 1997).
520 $a Finally, it is hypothesized that agrammatic substitution errors reflect overuse of Impoverishment (Bonet, 1991), a grammatical operation that eliminates features from terminal nodes in the syntactic derivation. Previously published data on agrammatic errors on agreement morphology are examined to determine if substituted forms are less specified, where specificity is formally determined on the basis of a feature geometry held to organize phi-features (Harley & Ritter, 2002). Errors showed a significant effect of markedness when compared to a random distribution; however, it remains unclear what effect other factors such as frequency may have on these errors.
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